Compressed air auxiliary device and control method for supercharged internal combustion engine

Abstract

The invention provides a compressed air auxiliary device of a supercharged internal combustion engine and a control method. The device comprises an air compressor, a spraying pipe a, a spraying pipe b, an actuator I and an actuator II, wherein the pipe a is mounted in an air inlet way of the air compressor; the spraying pipe b is mounted on the wall of a receiver; an air spraying angle of the spraying pipe a is controlled through the actuator I; and the position of the spraying pipe a in the air inlet way of the air compressor is adjusted through the actuator II. The control method comprises the following steps: in the process of monitoring the acceleration and the loading of the supercharged internal combustion engine, the spraying pipe a and the spraying pipe b begin to spray air into the air compressor; the actuator I adjusts the air spraying angle of the spraying pipe a according to the rotating speed and the flow of the air compressor; the actuator II adjusts the position of the spraying pipe a in the air inlet way of the air compressor; in the process of monitoring the completion of acceleration and loading, the air spraying of the spraying pipe a and the spraying pipe b is finished; and meanwhile, the actuator II is used for controlling to shift out the spraying pipe b from the air inlet way of the air compressor to the position of an imaginary line. The device is simple in structure, and can improve the economy and the discharge performance of a turbo-charged internal combustion engine in the acceleration or loading process.

Description

technical field [0001] The invention relates to turbocharging technology of an internal combustion engine, in particular to a compressed air auxiliary device and a control method for a supercharged internal combustion engine. Background technique [0002] The use of turbocharging technology can increase the power per liter of the internal combustion engine and reduce the fuel consumption rate, so most internal combustion engines have already adopted supercharging technology. However, with turbocharging technology, during the acceleration or loading process of the internal combustion engine, due to the rotational inertia of the supercharger, the speed of the supercharger rises slowly, and the air pressure at the outlet of the compressor is low, so that the intake air volume of the internal combustion engine cannot meet the combustion, so During the acceleration process, the fuel consumption rate increases, and the amount of harmful substances in the exhaust gas increases, whi...

AI Technical Summary

Problems solved by technology

However, with turbocharging technology, during the acceleration or loading process of the internal combustion engine, due to the rotational inertia of the supercharger, the speed of the supercharger rises slowly, and the air pressure at the outlet of the compressor is low, so that the intake air volume of the internal combustion engine cannot meet the combustion, so During the acceleration process, the fuel consumption rate increases, and the amount of harmful substances in the exhaust gas increases, which makes the economy and emission of the internal combustion engine deteriorate sharply.

Images